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US 2004/0062324 A1Published application
Method and apparatus of cross-correlation
AssigneeMarvell World Trade Ltd.
InventorsKobby Pick, Yona Perets
Life of this patent
Estimating the term…
Abstract
Briefly, a method and apparatus to calculate cross-correlation values of complex binary sequences are provided. The apparatus may include a transformation unit and a cross-correlator. The cross-correlator may include a cross-correlation controller to provide, based on a type bit and a sign bit, a real component and/or an imaginary component of signals of complex binary sequences to a real accumulator and/or to an imaginary accumulator.
Claims24
An apparatus comprising:
- A transformation unit to transform quadrature phase shift keying (QPSK) sequences of first and second input signals into first and second signals of complex binary sequences;
- and
- a cross-correlator to cross-correlate the first and second signals of complex binary sequences based on a sign bit and a type bit provided by the transformation unit.
A method comprising:
- cross-correlating between a first signal of complex binary sequences and a second signal of complex binary sequences according to a sign bit and a type bit provided by phase-rotating the complex binary sequences of the first and second signals.
An apparatus comprising:
- a dipole antenna to receive first and second input signals of quadrature phase shift keying (QPSK) sequences;
- a transformation unit to transform quadrature phase shift keying (QPSK) sequences of the first and second input signals into first and second signals of complex binary sequences;
- and
- a cross-correlator to cross-correlate the first and second signals of complex binary sequences based on a sign bit and a type bit provided by the transformation unit.
1 more element
An article comprising:
- a storage medium having stored thereon instructions that when executed result in:
- cross-correlating between a first signal of complex binary sequences and a second signal of complex binary sequences according to a sign bit and a type bit provided by phase-rotating the complex binary sequences of the first and second signals.
Dependencies are inferred from the claim text.